Isolated battery charger with multi‐level rectifier

Wu, Jinn‐Chang; Jou, Hurng‐Liahng; Han, Jia-Jhong

doi:10.1049/iet-pel.2016.0069

Cited by 4 publications

(2 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An active boost derived PFC topology is proposed in [20] where almost unity power factor has been achieved, but it suffers from a line current THD of 7.4%, which violates IEEE519 regulation [21]. Seven level ac-dc power converter with an isolated dc-dc converter is proposed in [22] ensuring high efficiency, almost unity power factor with an acceptable rate of THD. A unidirectional current-source active rectifier with a boost converter for onboard battery charging system is proposed in [23].…”

Section: Introductionmentioning

confidence: 99%

Inverse sinusoidal pulse width modulation switched electric vehicles’ battery charger

Das¹,

Salim²,

Chowdhury³

et al. 2019

IJECE

View full text Add to dashboard Cite

<p>This paper documents an efficient, cost-effective and sustainable grid-connected electric vehicles (EVs) battery charger based on a buck converter to reduce the harmonics injected into the mains power line. To utilize the switching converter as an effective power factor controller (PFC), inverse sinusoidal pulse width modulation (ISPWM) signals have been applied. A mathematical relationship between the sending-end power factor and the duty ratio of the switching converter has been presented. To ensure the sustenance of the proposed method, a simulation model of the proposed battery charging system has been tested on PSIM simulation platform. The simulation results yield to a lossless charging system with a sending-end power factor close to unity. An experimental testbed comprising a 60 V battery bank of 100 A-h capacity with a charging current of 7 A has been generated. The laboratory assessments present an 88.1% efficient charging prototype with a resultant sending-end power factor of 0.89. The laboratory framework concerns with the comparative analysis of the power efficiency, sending-end power factor and lines current total harmonic distortion (THD) values obtained for different charging methods and the evaluations corroborate the reliability of the proposed work.</p>

show abstract

Section: Introductionmentioning

confidence: 99%

Inverse sinusoidal pulse width modulation switched electric vehicles’ battery charger

Das¹,

Salim²,

Chowdhury³

et al. 2019

IJECE

View full text Add to dashboard Cite

show abstract

“…The switching operations for the power converters are interleaved so the effective switching frequency is multiplied and the power capacity of the output filter is reduced. A multi-level circuit topology combines more power converters in series so an output voltage with more voltage levels is generated [13][14][15][16][17][18]. The multi-level voltage reduces the magnitude of the dominant switching harmonics such that the power capacity of the output filter is reduced.…”

Section: Introductionmentioning

confidence: 99%

Interleaved multi‐level power converter for a battery energy storage system

Wu¹,

Jou²,

Chiu³

2019

IET Power Electronics

Self Cite

View full text Add to dashboard Cite

This study proposes an interleaved multi-level power converter (IMPC) for a battery energy storage system. The proposed IMPC is composed of two power-electronic legs. The first power-electronic leg is an interleaved multi-level leg that contains eight power-electronic switches. Four power-electronic switches constitute a two-phase interleaved switch set and these are switched in a high-frequency interleaved pulse-width modulation. The other four power-electronic switches constitute a level-selection switch set that determines the dc bus voltage for the two-phase interleaved switch set according to the magnitude of the utility voltage. The second power-electronic leg is the low-frequency switching leg, which is composed of two power-electronic switches. Since the proposed IMPC integrates the performances of the multi-level power converter and interleaved power converter, the effective switching frequency is twice the practical switching frequency and the output voltage has five voltage levels. The ripple of the output current is significantly attenuated and the power capacity of the output filter is reduced. The proposed IMPC can also be used to adjust the real and the reactive power flows, in order to control the charging/ discharging of battery sets and to compensate for the reactive power. A hardware prototype is developed to verify the performance of the proposed IMPC.

show abstract